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Technical Specifications
Last Updated: 2026-07-10
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Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KDS-BL680 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
8.4V
236.13 oz-in
17.00 kg-cm
1.7 N-m
6.0V
277.80 oz-in
20.00 kg-cm
2.0 N-m
|
| Speed |
8.4V
0.09 sec/60°
666.7 deg/s
111.1 RPM
6.0V
0.07 sec/60°
857.1 deg/s
142.9 RPM
|
| Running Current | (add) |
| Stall Current | (add) |
| Physical | |
| Weight | 2.50 oz71.0 g |
| Dimensions |
L 1.59 in W 0.79 in H 1.46 in L 40.5 mm W 20.0 mm H 37.0 mm |
| Case Material | Metal |
| Drivetrain | |
| Motor Type | Brushless |
| Motor Drive | (add) |
| Gears | Metal |
| Gear Spline/Teeth | (add) |
| Shaft Size | (add) |
| Rotation Mode | (add) |
| Rotation/Support | (add) |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Digital |
| Direction | (add) |
| Rotational Range | (add) |
| Mechanical Limit | (add) |
| Pulse Cycle | (add) |
| Pulse Width | (add) |
| Neutral Position | 1520 µs |
| Dead Band | (add) |
| Refresh Rate | 333 Hz |
| Angle Sensor | (add) |
| Control System | PWM |
| Programmable | (add) |
| Signal Voltage | (add) |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Power Source | (add) |
| Regulator Type | (add) |
| Temperature | (add) |
| Water Rating | (add) |
| Certification | (add) |
| Idle Current | (add) |
| Connectivity | |
| Connector | (add) |
| Wire Length | (add) |
| Origin | |
| Country of Origin | China |
Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.
Performance Analysis
| Shaft Power | 4.85–7.34 W |
| Torque Density | 3.9127 oz-in/g Stronger than 60% of the 832 Digital Standard servos in the database |
| Torque-to-Volume Ratio | 151.99 oz-in/in³ Denser torque than 65% of the 843 Digital Standard servos in the database |
| Power Density | 4.015 W/in³ More power-dense than 71% of the 1644 Digital Standard servos in the database |
| Speed-to-Weight | 0.20121 (1/sec·g) Faster than 83% of the 821 Digital Standard servos in the database |
| Speed-Torque Trade-off | 19.45 Better balanced than 38% of the 826 Digital Standard servos in the database |
| Torque Gain per Volt | -6.25%/V More voltage-responsive (torque) than 0% of the 673 Digital Standard servos in the database |
| Speed Gain per Volt | -9.26%/V More voltage-responsive (speed) than 0% of the 687 Digital Standard servos in the database |
| Voltage Range Width | 2.4 V Wider voltage range than 53% of the 1269 Digital Standard servos in the database |
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